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Write down the LCM of the following numbers, give your answer in exponential form. \( A=2^{9} \times 3^{6} \times 5^{4} \times 11^{3} \) \( B=2^{2} \times 3^{7} \times 7^{2} \) \( C=2^{7} \times 3^{3} \times 13^{3} \)

Ask by Donnelly Erickson. in South Africa
Mar 13,2025

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The LCM of the numbers is \( 2^9 \times 3^7 \times 5^4 \times 7^2 \times 11^3 \times 13^3 \).

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The Deep Dive

To find the Least Common Multiple (LCM) of the numbers \( A \), \( B \), and \( C \), we need to take the highest powers of each prime factor from the three expressions. The prime factors involved are \( 2, 3, 5, 7, 11, \) and \( 13 \). 1. For \( 2 \): The maximum power is \( 2^9 \) from \( A \). 2. For \( 3 \): The maximum power is \( 3^7 \) from \( B \). 3. For \( 5 \): The maximum power is \( 5^4 \) from \( A \). 4. For \( 7 \): The maximum power is \( 7^2 \) from \( B \). 5. For \( 11 \): The maximum power is \( 11^3 \) from \( A \). 6. For \( 13 \): The maximum power is \( 13^3 \) from \( C \). Putting all this together, the LCM is: \[ LCM = 2^{9} \times 3^{7} \times 5^{4} \times 7^{2} \times 11^{3} \times 13^{3} \]

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